# std::chrono::operator<<(std::chrono::zoned_time)

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< cpp‎ | chrono‎ | zoned time

Defined in header `<chrono>` |  |
template< class CharT, class Traits, class Duration, class TimeZonePtr > std::basic_ostream<CharT, Traits>& operator<<( std::basic_ostream<CharT, Traits>& os, const std::chrono::zoned_time<Duration, TimeZonePtr>& tp ); |  | (since C++20)

Outputs tp to the stream os, as if by std::format(os.getloc(), fmt, tp), where `fmt` is "{:L%F %T %Z}" if `CharT` is char, or L"{:L%F %T %Z}" if `CharT` is wchar_t.

### Parameters

os | - | output stream
tp | - | `zoned_time` to output

### Return value

os

### Example

| This section is incomplete Reason: no example

### Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR | Applied to | Behavior as published | Correct behavior
--- | --- | --- | ---
P2372R3 | C++20 | the given locale was used by default | `L` is needed to use the given locale

### See also

std::formatter<std::chrono::zoned_time> (C++20) | formatting support for `zoned_time` (class template specialization)

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